package dao;

import java.util.Date;
import java.util.List;

import org.hibernate.LockOptions;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;

import bean.Support;

/**
 * A data access object (DAO) providing persistence and search support for
 * Support entities. Transaction control of the save(), update() and delete()
 * operations can directly support Spring container-managed transactions or they
 * can be augmented to handle user-managed Spring transactions. Each of these
 * methods provides additional information for how to configure it for the
 * desired type of transaction control.
 * 
 * @see bean.Support
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class SupportDAO {
    protected static final Logger log = LoggerFactory.getLogger(SupportDAO.class);
    // property constants
    public static final String SUPPORTER = "supporter";
    public static final String CANDIDATE = "candidate";

    protected SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    protected Session getCurrentSession() {
        return sessionFactory.getCurrentSession();
    }

    protected void initDao() {
        // do nothing
    }

    public void save(Support transientInstance) {
        log.debug("saving Support instance");
        try {
            getCurrentSession().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }

    public void delete(Support persistentInstance) {
        log.debug("deleting Support instance");
        try {
            getCurrentSession().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }

    public Support findById(java.lang.Integer id) {
        log.debug("getting Support instance with id: " + id);
        try {
            Support instance = (Support) getCurrentSession().get(
                    "bean.Support", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }

    public List findByExample(Support instance) {
        log.debug("finding Support instance by example");
        try {
            List results = getCurrentSession().createCriteria("bean.Support")
                    .add(Example.create(instance)).list();
            log.debug("find by example successful, result size: "
                    + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }

    public List findByProperty(String propertyName, Object value) {
        log.debug("finding Support instance with property: " + propertyName
                + ", value: " + value);
        try {
            String queryString = "from Support as model where model."
                    + propertyName + "= ?";
            Query queryObject = getCurrentSession().createQuery(queryString);
            queryObject.setParameter(0, value);
            return queryObject.list();
        } catch (RuntimeException re) {
            log.error("find by property name failed", re);
            throw re;
        }
    }

    public List findBySupporter(Object supporter) {
        return findByProperty(SUPPORTER, supporter);
    }

    public List findByCandidate(Object candidate) {
        return findByProperty(CANDIDATE, candidate);
    }

    public List findAll() {
        log.debug("finding all Support instances");
        try {
            String queryString = "from Support";
            Query queryObject = getCurrentSession().createQuery(queryString);
            return queryObject.list();
        } catch (RuntimeException re) {
            log.error("find all failed", re);
            throw re;
        }
    }

    public Support merge(Support detachedInstance) {
        log.debug("merging Support instance");
        try {
            Support result = (Support) getCurrentSession().merge(
                    detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    public void attachDirty(Support instance) {
        log.debug("attaching dirty Support instance");
        try {
            getCurrentSession().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public void attachClean(Support instance) {
        log.debug("attaching clean Support instance");
        try {
            getCurrentSession().buildLockRequest(LockOptions.NONE).lock(
                    instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public static SupportDAO getFromApplicationContext(ApplicationContext ctx) {
        return (SupportDAO) ctx.getBean("SupportDAO");
    }
}